8
As delivered from the factory, the MAX-61FX has its
needle-valve assembly installed horizontally.
However, if more convenient for a particular
installation, the needle-valve may be reinstalled
vertically behind the cylinder. (See sketch opposite.)
Please note that the needle-valve knob has a center
hole and set-screw for the fitting of a piano-wire
extension so that, when relocated vertically, the
extension enables adjustments to be made without
risk of burning one's fingers on the cylinder head.
NEEDLE-VALVE LOCATION
BASIC ENGINE PARTS
Cylinder head
Carburetor
Silicone Tube
Crankshaft
Propeller nut
Propeller washer
Drive Hub
Crankcase
Needle valve
Cover Plate
Fuel outlet
Fuel inlet
Glowplug
Fuel inlet
Beam Mount
MAX-61FX
Throttle
Lever
Throttle Stop Screw
Using 8mm wrench, remove complete needle-valve
holder assembly including needle, from side of
cover plate.
Remove fuel inlet assembly from upper boss of
cover plate.
Transfer banjo type fuel inlet including washers, to
needle-valve holder and carefully screw complete
assembly into upper boss vacated by fuel inlet
assembly. Tighten very carefully.
The procedure for relocating the needle-valve vertically
is as follows:
1.
2.
3.
9
Inlet Holder
Plug Screw
Fuel Inlet
Needle-Valve
Assembly
Needle Extension
Inlet Holder
Fuel Inlet
Needle-Valve
Assembly
45m
m
Fuel Inlet
Needle-Valve
Assembly
Plug Screw
Fuel Inlet
Needle-Valve
Assembly
Needle Extension
45m
m
61FX
50SX
Use hexagon-head brass inlet holder (61FX) or
plug screw (50SX) to blank off side boss vacated
by needle- valve assembly.
4.
As delivered from the factory, the 91FX has the
needle-valve assembly installed vertically. However, if
more convenient for a particular installation, the
needle-valve may be reinstalled horizontally.
The procedure for relocating the needle-valve is as
follows:
Remove the two cover-plate screws which secure
the needle-valve assembly bracket, then carefully
remove the two screws by which the needle-valve
unit is attached to the bracket.
1.
